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Table 2 Values of Cronbach´s alpha coefficient por the REALD-29 PT (n = 206)

From: Validity and reliability of the Portuguese version of the rapid estimate of adult literacy in dentistry: REALD-29 PT

Variable

Item (Portuguese Version)

Item (English language)

R

R without item

α without item

a2

Fumar

Smoking

0.3179

.294

.894

a3

Fio dentário

Floss

0.4841

.430

.891

a4

Escovar

Brush

0.2867

.240

.894

a5

Polpa

Pulp

0.5942

.553

.889

a6

Fluor

Fluoride

0.5893

.529

.889

a7

Aparelho

Braces

0.3850

.353

.893

a8

Genética

Genetics

0.6454

.602

.888

a9

Restauração

Restoration

0.4971

.462

.891

a10

Bruxismo

Bruxism

0.5737

.516

.890

a11

Abcesso

Abscess

0.6649

.613

.887

a12

Extração

Extraction

0.5782

.533

.889

a13

Dentadura

Denture

0.5352

.484

.890

a14

Esmalte

Enamel

0.3969

.358

.893

a15

Dentição

Dentition

0.6182

.564

.888

a16

Placa

Plaque

0.3279

.293

.894

a17

Gengiva

Gengiva

0.5564

.508

.890

a18

Mal oclusão

Maloclusion

0.4648

.404

.892

a19

Incipiente

Incipient

0.5502

.485

.890

a20

Caries

Caries

0.5977

.544

.889

a21

Periodontal

Periodontal

0.2615

.208

.895

a22

Selante

Sealant

0.5566

.499

.890

a23

Hipoplasia

Hypoplasia

0.5423

.482

.890

a24

Halitose

Halitosis

0.5678

.505

.890

a25

Analgesia

Analgesia

0.4157

.356

.893

a26

Celulite

Cellulitis

0.6262

.574

.888

a27

Fistula

Fistula

0.5854

.525

.889

a28

Temporomandibular

Temporo mandibular

0.2536

.220

.894

a29

Hiperemia

Hyperemia

0.5044

.438

.891

a30

Apicectomia

Apicoectomy

0.3880

.335

.893